pid namespaces: round up the API

The set of functions process_session, task_session, process_group and
task_pgrp is confusing, as the names can be mixed with each other when looking
at the code for a long time.

The proposals are to
* equip the functions that return the integer with _nr suffix to
  represent that fact,
* and to make all functions work with task (not process) by making
  the common prefix of the same name.

For monotony the routines signal_session() and set_signal_session() are
replaced with task_session_nr() and set_task_session(), especially since they
are only used with the explicit task->signal dereference.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 45ff3d63b758..2bbcc8151dc3 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -582,7 +582,7 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
         oz_mode = autofs4_oz_mode(sbi);
 
         DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
-                 current->pid, process_group(current), sbi->catatonic, oz_mode);
+                 current->pid, task_pgrp_nr(current), sbi->catatonic, oz_mode);
 
         unhashed = autofs4_lookup_unhashed(sbi, dentry->d_parent, &dentry->d_name);
         if (!unhashed) {
@@ -976,7 +976,7 @@ static int autofs4_root_ioctl(struct inode *inode, struct file *filp,
         void __user *p = (void __user *)arg;
 
         DPRINTK("cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u",
-                cmd,arg,sbi,process_group(current));
+                cmd,arg,sbi,task_pgrp_nr(current));
 
         if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
              _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)